800m深井三软煤巷锚杆支护试验研究

An Experimental Study of Bolting in Three-soft Coalroad in Deep Shaft

随着矿井开采深度的增加 ,矿工钢支护已难以适应深井三软煤巷围岩压力和变形。通过在白集煤矿 - 80 0m水平极软厚煤层三软围岩条件下采用组合锚杆支护技术的研究 ,提出了合理可行的支护技术路线、完整的锚杆支护参数设计 ,试验监测结果表明 ,该技术可靠性高 。

In deep shaft,along with the increasment of the exploitation depth,the I-steel supporting is difficult to adaot the stress and deformation of surrounding rock in three-soft coal mine.Through the study of adopting compound bolting technology in condition of-800 m-deep three-soft coal of Baiji coal mine,reasonable and feasible supporting technology route and complete paramter design of bolting support are put forward.When the technique of compound bolting is adopted,the experimental result shows that the ideal effect and remarkable economic benefit is obtained.